Journal of Transport Geography最新文献

{"title":"Assessing the impacts of free-floating shared micromobility services on docked bike-sharing: Insights from the case studies of Poznań and Brussels","authors":"Michał Dzięcielski ,&nbsp;Frédéric Dobruszkes ,&nbsp;Alexandros Nikitas ,&nbsp;Adam Radzimski","doi":"10.1016/j.jtrangeo.2025.104306","DOIUrl":"10.1016/j.jtrangeo.2025.104306","url":null,"abstract":"<div><div>For many years docked bike-sharing systems in hundreds of cities were developed under the auspices of local public authorities, and thus within a regulated perspective. Then, within a short time window, new operators appeared on the streets with an offer of free-floating e-scooters, e-bikes and e-mopeds. These free-floating micromobility services were often introduced hastily, sometimes without prior consultation with local authorities. The main motive for their introduction was financial profit, rather than integration into the local transport eco-system and mobility policy framework. The aim of this study is to explore the impact of the introduction of free-floating shared micromobility services (and especially e-scooters) on docked bike-sharing systems and to address whether these could have been the main reason for the closure or decline of some of them. We aimed to examine this in two different cities (i.e., Poznań, Poland and Brussels, Belgium), where different models of docked bike-sharing were used. We used different sources of data: aggregated rentals of shared bikes for a time span of over 10 years, disaggregated data (bike station level) and interviews with stakeholders. Our analysis suggests that the introduction of e-scooters to both cities contributed to a decline in shared bike rentals, which amounted to around 40 % in Brussels and 80 % in Poznań before the scheme's eventual closure in 2022. However, the usage decline in Brussels was much smaller than the actual usage of free-floating e-scooters and e-bikes. It should be noted that other factors have likely contributed to the decline in Poznań being much greater than in Brussels, such as restrictions on bike-sharing use during the Covid-19 pandemic and insufficient maintenance of the bicycles. In addition, differentiated spatial patterns were also observed. For instance, in Poznań the highest decrease in rentals was observed in the city centre, whereas the lowest decrease was seen in the case of a bike station close to a transport hub with train, tram and bus stations. This research can be useful, in deciding how to develop resilient shared micromobility systems in a complex and constantly changing urban transport eco-system.</div></div>","PeriodicalId":48413,"journal":{"name":"Journal of Transport Geography","volume":"128 ","pages":"Article 104306"},"PeriodicalIF":5.7,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144194706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mobility governance in remote areas: Evidence from how Qinghai Lake addresses bicycle tourism","authors":"Meng Yuan","doi":"10.1016/j.jtrangeo.2025.104309","DOIUrl":"10.1016/j.jtrangeo.2025.104309","url":null,"abstract":"<div><div>Mobility governance has been an important topic in transport geography research, yet existing studies focused more on urban areas and overlooked the role of tourism in reallocating mobility resources. Thus, this article delves into bicycle tourism, which combines transportation and tourism characteristics, and its mobility governance in remote areas. Qinghai Lake is chosen to examine how destinations govern the challenges of bicycle tourism through mobility regimes. Findings indicate that bicycle tourists encounter mobility hindrances from motor vehicles, particularly large trucks. To mitigate these negative impacts, the destination endeavors to reform mobility regimes, including modifying mobility rules, enhancing infrastructure, and expanding bicycle tourism products and services. Through these governance measures, the mobility of bicycle tourists has been improved to a certain extent. This study provides a unique perspective on the geographical evolution of transport systems in remote areas through the entry point of bicycle tourism.</div></div>","PeriodicalId":48413,"journal":{"name":"Journal of Transport Geography","volume":"127 ","pages":"Article 104309"},"PeriodicalIF":5.7,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144196458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characterizing regional importance in cities with human mobility motifs in metro networks","authors":"Shuyang Shi ,&nbsp;Ding Lyu ,&nbsp;Lin Wang ,&nbsp;Xiaofan Wang ,&nbsp;Guanrong Chen","doi":"10.1016/j.jtrangeo.2025.104303","DOIUrl":"10.1016/j.jtrangeo.2025.104303","url":null,"abstract":"<div><div>Uncovering higher-order spatiotemporal dependencies within human mobility networks in transportation systems provides crucial insights into urban structure analysis. In most existing studies, human mobility networks are commonly constructed by aggregating all trips without distinguishing who takes which trip. In contrast, we claim that individual mobility motifs – higher-order patterns emerging from individuals' daily trips – serve as fundamental units of human mobility networks. In this study, we propose two network construction frameworks based on mobility motifs to characterize regional importance within cities. First, we consider hidden dependencies within individuals' trips in one day and construct mobility networks based on this mechanism. Second, drawing inspiration from the PageRank algorithm, we hypothesize that individuals assign varying levels of importance to destinations based on their trip intentions. We develop motif-based and motif-wise network construction frameworks. By leveraging large-scale metro data from three cities, Shanghai, Beijing, and Hangzhou, we construct three types of human mobility networks and assess regional importance in urban areas through node importance metrics. Comparative results indicate that the motif-based mobility network outperforms traditional mobility networks, underscoring the efficacy of incorporating human mobility motifs. Finally, we demonstrate that our motif-wise framework significantly improves the accuracy of regional importance characterization.</div></div>","PeriodicalId":48413,"journal":{"name":"Journal of Transport Geography","volume":"127 ","pages":"Article 104303"},"PeriodicalIF":5.7,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144189398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Measuring dynamic accessibility by metro system under travel time uncertainty based on smart card data","authors":"Yongsheng Zhang ,&nbsp;Kangyu Liang ,&nbsp;Becky P.Y. Loo","doi":"10.1016/j.jtrangeo.2025.104294","DOIUrl":"10.1016/j.jtrangeo.2025.104294","url":null,"abstract":"<div><div>Measuring dynamic accessibility in the metro system is important for improving operations and for allowing passengers to plan their trips in advance under different circumstances. Yet, due to the large amount of data required, most accessibility studies do not consider the impacts of travel time uncertainty and individual preferences. In metro systems, smart cards record accurate travel information of each passenger. Based on detailed smart card data, this study proposes a framework for measuring dynamic accessibility by the metro system under travel time uncertainty and individual differences. First, dynamic reliable space-time prisms, which consider the impacts of travel time budget, time-varied travel time uncertainty and dynamic individual risk attitude, are used to generate dynamic feasible destination sets. Then, a dynamic destination choice model is built based on the discrete choice model considering the dynamic attractiveness of metro stations and time-varied travel time uncertainty. Finally, this study integrates the two sub-models to measure dynamic accessibility. The dynamic accessibility measure provides a more comprehensive framework for understanding travel behavior by capturing both objective spatial-temporal constraints and individual differences in the dynamic metro environment. The methodology is calibrated and evaluated in the Guangzhou Metro system, where the smart card data is available. The results show that accessibility differs significantly over different time periods. Notably, passengers at late hours are more risk averse to travel time uncertainty. Without considering the dynamic travel time, accessibility will be over-estimated during peak hours on urban lines and during non-peak hours on suburban lines. Moreover, variations of dynamic accessibility of terminal stations in suburban lines are higher.</div></div>","PeriodicalId":48413,"journal":{"name":"Journal of Transport Geography","volume":"127 ","pages":"Article 104294"},"PeriodicalIF":5.7,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Decoding mobility hubs: Opportunities and risks underpinning their introduction for the contexts of transport and the wider society","authors":"Alexandros Nikitas ,&nbsp;Elena Alyavina ,&nbsp;Chia Sadik ,&nbsp;Kalliopi Michalakopoulou","doi":"10.1016/j.jtrangeo.2025.104296","DOIUrl":"10.1016/j.jtrangeo.2025.104296","url":null,"abstract":"<div><div>In an era, where, on the one hand, climate change constitutes a planet-defining threat but, on the other, technology provides unprecedented opportunities for connectivity, sharing and intelligence in transport, mobility hubs have emerged as a potential cornerstone for less car-dominated societies. Still in their infancy as a brand, mobility hubs promise to be visible, accessible, and integration-enabling spaces, where public transit, shared mobility, micromobility and active travel modes co-exist harmoniously alongside infrastructure facilities like charging and sharing stations. Yet, there are still genuine question marks around their implementation, functionality, urban fit and use. Can mobility hubs create opportunities to address effectively transport and even wider societal challenges? Are there any risks or potential side-effects when adopting them? This paper attempts to provide answers by critically reviewing the existing literature and conducting a thematic narrative analysis, identifying and contextualising the opportunities and risks behind mobility hubs' introduction, adoption and travel behaviour impact. According to our research mobility hubs, if designed appropriately, can assume positive roles becoming: <em>an opponent for private car, a solution for any geography, a MaaS companion, a place of social abundance</em> and <em>a supporter of wider economy</em>. If they are not, though, mobility hubs may be instead responsible for: <em>environmental burdens, public indifference, discomfort by default, abuse of space</em> and <em>inequity problems</em>. Our work provides a genuine platform for decoding the potential of mobility hubs exploring the often-neglected grey sides of this shared transport phenomenon by focusing not only in new, niche, shared micromobility-centric investments but also looking at rebranded transit-based mechanisms. If these opportunities are seized and side-effects avoided, then there could be a powerful business case for mobility hubs we argue.</div></div>","PeriodicalId":48413,"journal":{"name":"Journal of Transport Geography","volume":"127 ","pages":"Article 104296"},"PeriodicalIF":5.7,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144185757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessing the impact of urban place irreplaceability on intercity travel mode choice","authors":"Sihan Liu ,&nbsp;Xinyi Niu ,&nbsp;Zhan Cao ,&nbsp;Jonas De Vos","doi":"10.1016/j.jtrangeo.2025.104308","DOIUrl":"10.1016/j.jtrangeo.2025.104308","url":null,"abstract":"<div><div>Understanding the relationship between intercity travel modes and the built environment from a functional perspective is essential for supporting and improving transportation services, coordinating regional development, and promoting regional sustainability. In urban regions, residents often engage in intercity travel to seek specific functions and services, and the choice of travel mode is closely related to the purpose of the trip. However, there has been limited research on the impact of differences in urban functions on intercity travel modes. In this study, we use irreplaceability (a measure of function uniqueness and scarcity of a place) to analyze the variations in the functions of different urban places and further examine the relationships between the functional aspects of the built environment and intercity travel modes. We conduct an empirical analysis of this relationship within the Shanghai–Suzhou urban region (China). The results indicate that, along with traditional morphological measures of the built environment, the irreplaceability of destinations displays a significant and important relationship with intercity travel modes. The selection of certain travel modes is driven by the desire to access unique services in destination cities. The strong functional irreplaceability of urban places is associated with frequent use of regional rail transit, whereas places with low irreplaceability are associated with road transit. Furthermore, the accessibility of regional rail transit stations moderates the effect of functional irreplaceability. The accessibility of regional rail transit stations enhances the role of irreplaceability, whereas the accessibility of expressways significantly suppresses it. This suggests that, within the Shanghai–Suzhou area, the most irreplaceable functions are best supported by regional rail transit. This study enhances the built environment framework by incorporating function measurements of irreplaceability, offering valuable insights into the sustainable development of intercity travel.</div></div>","PeriodicalId":48413,"journal":{"name":"Journal of Transport Geography","volume":"127 ","pages":"Article 104308"},"PeriodicalIF":5.7,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144185769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring the nonlinear effects of greenery on active travel among the ageing population","authors":"Ruoyu Wang ,&nbsp;Jiaying Zhang ,&nbsp;Dongwei Liu ,&nbsp;Yao Yao ,&nbsp;Mengqiu Cao","doi":"10.1016/j.jtrangeo.2025.104299","DOIUrl":"10.1016/j.jtrangeo.2025.104299","url":null,"abstract":"<div><div>This paper examines the nonlinear influences of the quantity and quality of street-level greenery on active travel among older adults. The active travel information was obtained from the Study on Global Ageing and Adult Health conducted in Shanghai, China. Street-level greenery was assessed based on street view data and a deep learning approach, namely street view greenery quantity (SVG-quantity) and quality (SVG-quality). Gradient boosting decision tree models and SHapley Additive exPlanations were applied. The results showed that SVG-quantity had a positive and nonlinear link with active travel. However, SVG-quality was positively correlated to the propensity for active travel, but the association became inverse when SVG-quality exceeded a specific cut-off point. SVG-quality also had a nonlinear and positive association with the duration of active travel. This research demonstrates the importance of improving the provision of street-level greenery in urban areas, which is crucial for facilitating active lifestyles among the ageing population.</div></div>","PeriodicalId":48413,"journal":{"name":"Journal of Transport Geography","volume":"127 ","pages":"Article 104299"},"PeriodicalIF":5.7,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144167470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spatio-temporal dynamic characteristics of the substitution effect of ride-hailing travel and its multi-activity network: a case study of Chengdu","authors":"Zhicheng Zheng ,&nbsp;Yang Li ,&nbsp;Peijun Rong ,&nbsp;Lijun Zhang ,&nbsp;Yaochen Qin ,&nbsp;Gangjun Liu","doi":"10.1016/j.jtrangeo.2025.104298","DOIUrl":"10.1016/j.jtrangeo.2025.104298","url":null,"abstract":"<div><div>The substitution relationship between ride-hailing and public transit significantly impacts urban transport carbon emissions. However, a quantitative analysis exploring the spatio-temporal dimensions of the substitution effect between these two modes of transport is still lacking. Furthermore, the motivations for travel and the associated activity networks remain unclear. This study proposes a spatio-temporal measure of the substitution effect of ride-hailing travels by introducing demand elasticity theory and big data technology to address these limitations. It explores the multi-activity network of the substitution effect and its community clustering features using an improved trip purpose identification method and complex network techniques. An empirical study in Chengdu, China, revealed a significant substitution influence of ride-hailing for public transport in central urban areas. Specifically, 28.69 % and 27.08 % of ride-hailing trips substituted public transport on weekdays and weekends, respectively. Regarding temporal variation, the substitution rate fluctuates dynamically with travel time and motivation changes and increases significantly during peak hours. Non-subsistence travel activities are the dominant type of substitute trips, while subsistence activities occur primarily during weekday peak hours. The complex network models reveal that the activity network of substitution effects exhibits significant spatial heterogeneity, hierarchy, and dependency characteristics. This research also confirms that differences in residents' travel patterns cause the coexistence of a monocentric and polycentric structure in the city. Furthermore, the community structure of substitute trips reveals that communities can shrink, disappear, or emerge depending on various temporal scenarios. These findings provide a basis for determining residential activity boundaries and travel circles. The study deepens the understanding of the dynamic interaction of the “substitution effect-multiple activity network-urban spatial structure” of travel modes. It provides valuable empirical evidence to enhance the competitiveness of public transport and more effectively regulate ride-hailing services. This holds significant practical value for sustainable urban development.</div></div>","PeriodicalId":48413,"journal":{"name":"Journal of Transport Geography","volume":"127 ","pages":"Article 104298"},"PeriodicalIF":5.7,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144167471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Empirical analysis of global crude oil transportation network amid the Russia-Ukraine conflict","authors":"Jie Zhu,&nbsp;Jing Lu,&nbsp;Wan Su","doi":"10.1016/j.jtrangeo.2025.104305","DOIUrl":"10.1016/j.jtrangeo.2025.104305","url":null,"abstract":"<div><div>This study examines the global Crude Oil Maritime Transportation Network (COMTN) in the context of the Russia-Ukraine conflict, focusing on its key structural elements, port communities and interdependencies. The COMTN is constructed using AIS data, along with a trade network built from the UNComtrade dataset. An analysis of changes in community structures within the trade network is then conducted, followed by the application of complex network theory and Point-wise mutual information (PMI) to evaluate port centrality and port interdependencies in COMTN. The findings reveal: (1) Western sanctions on Russia have resulted in a significant redirection of crude oil flows from Europe to Asia, leading to the formation of new trade clusters centered around China, India, and Russia, as well as emerging communities in Europe and the United States. (2) The structural and port analysis of the COMTN highlights the strong central positions of key hubs such as Fujairah, Singapore, and Rotterdam, reinforcing their roles as key hubs. (3) PMIs analysis identifies strong dependency relationships between ports, notably Ras Tanura and Zhoushan, Al Basra Oil Terminal and various India ports. The results provide essential insights to maritime authorities for the development of strategic import network plans and support policy initiatives aimed at enhancing global energy security and diversifying energy supply channels.</div></div>","PeriodicalId":48413,"journal":{"name":"Journal of Transport Geography","volume":"127 ","pages":"Article 104305"},"PeriodicalIF":5.7,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144167567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Built environment, car ownership and PM2.5: Stronger causal estimates from a quasi-experiment","authors":"Lin Shi ,&nbsp;Yiliang Jiang ,&nbsp;Faan Chen ,&nbsp;Kaiyi Zhu ,&nbsp;Chris P. Nielsen ,&nbsp;Yuejiao Wang ,&nbsp;Fang Tian ,&nbsp;Jiaorong Wu ,&nbsp;Xiaohong Chen","doi":"10.1016/j.jtrangeo.2025.104301","DOIUrl":"10.1016/j.jtrangeo.2025.104301","url":null,"abstract":"<div><div>The causal relationship between the built environment, car ownership, and travel-induced pollutant emissions remains obscured by residential self-selection (RSS) bias. This study leverages China's unique housing demolition and resettlement program to conduct a quasi-experiment, analyzing how the built environment impacts car ownership and travel-induced vehicle-related PM2.5 emissions in Shanghai. By employing structural equation modeling (SEM) on data from 5370 households relocated via government-assigned housing (i.e., replacement housing), we circumvent RSS bias and isolate the built environment's causal effects. Results reveal that higher residential density and land-use mix decrease car ownership but increase PM2.5 emissions to a certain extent, while increased road network density and bicycle/pedestrian connectivity reduce both car ownership and emissions. Car ownership, influenced by socio-demographics, the built environment, and transport services, mediates the relationship. Findings highlight the dual role of transportation and urban planning: extremely dense, mixed-use areas may inadvertently elevate emissions without green transport modes, whereas pedestrian-friendly designs and robust public transit reduce car dependency, hence decreasing emissions. This study provides actionable insights for policymakers to align urban and transport development with sustainability goals, advancing empirical evidence in a high-density Asian metropolis and addressing gaps in regional literature.</div></div>","PeriodicalId":48413,"journal":{"name":"Journal of Transport Geography","volume":"127 ","pages":"Article 104301"},"PeriodicalIF":5.7,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144167469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}